SMDX 16,303,304,306 can't load model

[johnnunneley]

Traceback (most recent call last):
File "C:\Users\jkn\Documents\GitHub\models\makeXLS.py", line 78, in
writeSmdxFile (xls, smdxFile)
File "C:\Users\jkn\Documents\GitHub\models\makeXLS.py", line 38, in writeSmdxFile
model = device.model_type_get(getModelId(smdxFile))
File "C:\Python27\lib\site-packages\sunspec\core\device.py", line 525, in model_type_get
raise SunSpecError('Error loading model %s at %s: %s' % (model_id, filename, str(e)))
sunspec.core.util.SunSpecError: Error loading model 00016 at C:\Python27\lib\site-packages\sunspec\core..\models\smdx\smdx_00016.xml: Unknown point type: uint64